Paper Testing and R&D Services
Count on WIST staff and the UW-Stevens Point pilot paper machine for:
- raw material and/or chemical additive studies
- equipment evaluation
- grade development
- production runs
This Fourdrinier machine has a 20-inch web, runs at speeds up to 200 fpm, and produces a sheet in basis weight from 15 to 400 gsm. Chemicals can be metered in at several locations in the stock preparation area. The wet end includes a dandy roll, single-felted two-nip press and a smoothing press. The dry end features two independent dryer sections, a horizontal size press and calender stack. The stock preparation area features a hydropulper, two-stage cleaner system, slotted pressure screen and automated temperature control. In short, this machine is ready for your project needs.
Pulping and Bleaching
WIST performs trials for wood and non-wood biomass, including food-processing byproducts and agricultural residual materials.
Benchtop equipment is sized 50-360 grams dry product weight; tank volume pulping and bleaching tests are completed in 5-liter, 10-liter and 100-liter vessels. WIST's quantum mixer allows bleaching experiments with chlorine dioxide, hydrogen peroxide and ozone.